Exposure
ID
GRAVI.2025-08-24T02:38:28.687_1
Header ID
GRAVI.2025-08-24T02:38:28.687
Date updated
2025-08-24 02:50:57 UTC+0000
Release date
2026-08-24 02:50:57 UTC+0000
UTC Start
2025-08-24 02:38:28.687
UTC End
2025-08-24 02:42:28.687
MJD Start
60911.11005425
MJD End
60911.11283202778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.0016475
Ambient temperature (°C)
5.41
Seeing (arcsec)
1.27
Observation
ID
70094
Category
science
Program ID
115.282E.002
Program Title
CIRCUMSTELLAR ENVELOPES OF NEARBY CEPHEIDS WITH GRAVITY TO REFINE THE PERIOD-LUMINOSITY RELATION IN THE JWST ERA
Program Type
Normal
PI / COI
HOCDÉ / NARDETTO / GALLENNE / KERVELLA / PIETRZYNSKI / GIEREN / MÉRAND / BRAS / BAILLEUL / LEFTLEY / AFANASIEV
Target
ID
52007
Name
U_Sgr
RA
277.971025
DEC
-19.12511
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 47.2900 47.2300 162.6000 163.2000
A0-J2 119.5750 118.7130 101.1000 101.6000
A0-J6 168.6970 168.5090 33.7100 33.9640
B5-J2 105.4970 104.8360 78.0000 78.2000
B5-J6 201.7690 201.7160 23.1970 23.5120
J2-J6 165.1470 165.0710 351.7470 352.2840
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60911.11005425
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V U Sgr
HIERARCH ESO INS SOBJ NAME U_Sgr
RA 277.971025
DEC -19.12511
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 256.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 8
HIERARCH ESO ISS PBL12 START 47.29
HIERARCH ESO ISS PBL12 END 47.23
HIERARCH ESO ISS PBLA12 START 162.6
HIERARCH ESO ISS PBLA12 END 163.2
HIERARCH ESO ISS PBL13 START 119.575
HIERARCH ESO ISS PBL13 END 118.713
HIERARCH ESO ISS PBLA13 START 101.1
HIERARCH ESO ISS PBLA13 END 101.6
HIERARCH ESO ISS PBL14 START 168.697
HIERARCH ESO ISS PBL14 END 168.509
HIERARCH ESO ISS PBLA14 START 33.71
HIERARCH ESO ISS PBLA14 END 33.964
HIERARCH ESO ISS PBL23 START 105.497
HIERARCH ESO ISS PBL23 END 104.836
HIERARCH ESO ISS PBLA23 START 78.0
HIERARCH ESO ISS PBLA23 END 78.2
HIERARCH ESO ISS PBL24 START 201.769
HIERARCH ESO ISS PBL24 END 201.716
HIERARCH ESO ISS PBLA24 START 23.197
HIERARCH ESO ISS PBLA24 END 23.512
HIERARCH ESO ISS PBL34 START 165.147
HIERARCH ESO ISS PBL34 END 165.071
HIERARCH ESO ISS PBLA34 START 351.747
HIERARCH ESO ISS PBLA34 END 352.284
HIERARCH ESO ISS AMBI TAU0 START 0.0018
HIERARCH ESO ISS AMBI TAU0 END 0.001495
HIERARCH ESO ISS AMBI TEMP 5.41
HIERARCH ESO ISS AMBI FWHM START 1.07
HIERARCH ESO ISS AMBI FWHM END 1.47